Drives in robot showing as Standalone

I am trying to add a new Win 2008 media server to Solaris master server and configure a SL500 Tape library and 12 LTO5 drives on new media server.

The tape library and drives are detected at OS level; how ever when i configure the drives through Netbackup GUI, all the LTO5 drives are showing as standalone. Under TLD i could see around 10 drives with message "Attached to remote host".

Hi Check output from 'scan'

Hi
Check output from 'scan' to see what the robot itself reports.
'Unused element' means that the robot itself is unaware of the drive(s).
A complete power cycle will probably 'fix' the robot status, after which NBU will pick up the robot drive contents correctly.
http://www.symantec.com/docs/HOWTO33049
Also if this is virtual library please check link below
http://www.symantec.com/docs/TECH135671
Thanks